Objective: The objective of this study is to assess the activity of Ulva lactuca polyphenols fraction in protecting the myocardial infarction induced by a high dose of isoproterenol. Methods: This study was carried out using Wistar albino rats divided into six groups. Group 1 was the normal group. Groups 2, 3, 4, 5, and 6 received isoproterenol (85 mg/kg) i.p. twice at an interval of 24 h on the 14th and 15th day. In addition to isoproterenol, Group 3 received verapamil (5 μmol/kg) as a single dose intravenously on the 14th day 10 min before isoproterenol and Groups 4, 5, and 6 received U. lactuca polyphenols fraction at the doses of 50, 100, and 200 mg/kg, respectively, for 14 days. On the 16th day, serum and heart samples were harvested from the animals and the cardioprotective and antioxidant activities were assessed by studying the levels of cardiac functional heart marker enzymes, lipid profile, reduced glutathione, and antioxidant enzymes. Results: U. lactuca polyphenols fraction, at the tested doses, restored the levels of all serum markers and enzymes (aspartate aminotransferase, alanine aminotransferase, creatine phosphokinase, lactate dehydrogenase, cholesterol, triglycerides, and reduced glutathione) and heart homogenate antioxidant markers (reduced glutathione, superoxide dismutase, catalase, and glutathione peroxidase) significantly, in dose-dependent manner. Conclusion: This study suggests that U. lactuca polyphenols fraction has a cardioprotective effect against isoproterenol-induced myocardial infarction and possess antioxidant activities.
In this study, Doxorubicin is used as an effectual induction of cardiotoxicity and heart malfunction in the taken experimental rats which is an anthracycline chemotherapeutic mediator used to the treat of a wide variety of malignancies. To examine the shielding property of ethanolic lower extract of clitoraternatea (EECT) scheduled doxorubicin(DOX) persuaded cardiotoxicity via albino wistar rats,through inspect the enzymatic,non-enzymatic antioxidant position,serum enzyme and Histopathology tissue.Experimental rats been provoked cardiotoxicity by means of a generous single dose of doxorubicin (15mg /body weight ) and treated orally through an ethanolic extract of clitoraternatea (EECT) for 14 days (100 mg/kg bw, 200 mg/kg bw and 300mg/kg bw,n=5). On 15 days, the rats are sacri iced by treated through Ketamine -Xylazine,Biochemical as well as histological remarks of the heart tissues had carry out. Cardiotoxicity had been calculated throughout to establish the cardio marker enzyme levels such as (LDH) Lactic acid dehydrogenase,(CK-MB) Creatinin kinase and (AST) Aspartate transaminase at the inish of the study. Management through EECT of 200mg/kg and 300mg/kg considerably reduced the levels of cardiac marker enzymes(p<0.05) and as well minimize the decrease of weight of the heart of DOX treated group. In heart tissue superoxide dismutase, glutathione and catalase heights be signi icantly greater than before and lipid oxide peroxide (LPO) signi icantly decreased in the extract (200 &300 mg /kg bw).
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